This is the firmware repo for OpenRigil. This includes accelerated crypto implementation and drivers for our peripherals.
First you should build a lateset riscv-gnu-toolchain with rv32imac ARCH and ilp32 ABI.
# get riscv-gnu-toolchain repo then
cd riscv-gnu-toolchain
./configure --with-arch=rv32imac --with-abi=ilp32
After including the built binaries in your PATH, you could
cd openrigil-firmware
mkdir build; cd build
cmake -DCMAKE_TOOLCHAIN_FILE=../riscv32.cmake ..
make -j`nproc`
Now you could find openrigil.hex in the artifacts. Now you should see the guide in openrigil-rtl.
This is not secure and should not be used in production. Use with caution!